.yiyan-container{
    width: 100vw;
    height: 100vh;
    background: url("http://api.xiaohigh.com:8090/image/random");
    background-size: cover;
    position:relative;
    display:flex;
    justify-content: center;
    align-items: center;
}

.mask{
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    position:absolute;
    left: 0;
    top: 0;
    z-index: 0;
}

.text-area{
    position:relative;
    z-index: 2;
    width: 500px;
    min-height: 200px;
    color:white;
    
}

.text-area p{
    text-align:center;
    font-size: 30px;
    letter-spacing: 2px;margin-bottom: 40px;
}

.text-area .from{
    text-align:right;
    font-size: 20px;
}